An electric generator consumes some oil fuel and generates output of 25 kW. Calorific
value (amount of heat released per unit mass) of the oil fuel is 17200 kcal/kg and efficiency
(output to input ratio) of the generator is 0.25. Then, mass of the fuel consumed per hour
and electric energy generated per ton of fuel burnt are respectively

A

$$0.5\ \text{kg}$$, $$20000\ \text{kWh}$$

B

$$0.5\ \text{kg}$$, $$5000\ \text{kWh}$$

C

$$5\ \text{kg}$$, $$5000\ \text{kWh}$$

D

$$5\ \text{kg}$$, $$20000\ \text{kWh}$$